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Sporophyte phase with meiosis occurs in an apical cell to produce the gametophyte stage. [3] Pit connections have two pit plug cap layers with the other layer enlarged. [3] This family of freshwater red algae is uniaxial, meaning each filament with a single apical cell. [4] The genera included within Batrachospermaceae are listed in the table ...
Micrasterias is a unicellular green alga of the order Desmidiales.Its species vary in size reaching up to hundreds of microns. Micrasterias displays a bilateral symmetry, with two mirror image semi-cells joined by a narrow isthmus containing the nucleus of the organism.
Cells within circular regions within the perithallus lengthen to form sexual conceptacles, [8] leaving long, wefty cells around the walls of the conceptacle. [14] In the male conceptacles of Austrolithon , marginal filaments grow more quickly, bending in over the top of the conceptacle cavity and eventually setting up as distinct filaments that ...
Pediastrum is a genus of green algae, in the family Hydrodictyaceae. [1] It is a photoautotrophic, nonmotile coenobial green alga that inhabits freshwater environments. The name Pediastrum comes from the Greek root words pedion, meaning "plane", and astron, meaning "star", referring to its overall shape.
Pandorina is a genus of green algae composed of 8, 16, or sometimes 32 cells, held together at their bases to form a sack globular colony surrounded by mucilage.The cells are ovoid or slightly narrowed at one end to appear keystone- or pear-shaped.
The cells then meet and fuse to form a zygote, which later undergoes meiosis to produce new filaments. As in plants, only the female passes chloroplasts on to the offspring. [5] Other conjugating algae are the Mesotaeniaceae, sister of the Zygnematales, and Spirotaenia, a basal green algae.
Batrachospermum is a genus of red algae from the family Batrachospermaceae.Due to its complex biological life cycle, descriptions of the taxon typically focus on gametophytes, while sporophytes, i.e., carposporophytes, are filamentous structures growing on the gametophyte, on which they depend.
Download QR code; Print/export Download as PDF; Printable version; In other projects ... move to sidebar hide. Cell biology; Animal cell diagram: Components of a ...
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